<!DOCTYPE html>
<html lang="en">
 <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <title>RPA Studio Solution</title>
  </head>

  <body>
          First Name:<br>
          <input type="text" id="First_Name"><br>
          Last Name:<br>
          <input type="text" id="Last_Name"><br>
          Age:<br>
          <input type="text" id="Age"><br>
          <button onclick="SubmitValues()">Submit</button>
          <script type="text/javascript">
          function SubmitValues(){
            var First_Name = document.getElementById("First_Name").value;
            var Last_Name = document.getElementById("Last_Name").value;
            var Age = document.getElementById("Age").value;
            window.external.setResult(First_Name + "," + Last_Name + "," + Age);
            return true;
          }  
          </script>
  </body>
  </html>